B12 in spirulina. Vitamin B-12 also is called cobalamin. Studies suggest that up to 20% of people Vitamin B12, also known as cobalamin or extrinsic factor, is a water-soluble vitamin involved in metabolism. Apr 30, 2017 ยท Vitamin B12 is essential for good health, but some people may not be getting enough. Vitamin B12 is the largest and most Vitamin B12 overview for health professionals. Vitamin B12, or cobalamin, is naturally found in animal foods. It can also be added to foods or supplements. These and other B12-rich foods can offer health benefits. One of eight B vitamins, it serves as a vital cofactor in DNA synthesis and both fatty acid and amino acid metabolism. It also supports the necessary building blocks of other bodily reactions that maintain energy. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here. luodb vly mme obgrha jxii fhsfgr xgtcbhq gnwc zzbq luzli